21566720

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 61810560

約数和(自身を除く): 40243840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 83, 112, 116, 128, 140, 145, 160, 166, 203, 224, 232, 256, 280, 290, 320, 332, 406, 415, 448, 464, 560, 580, 581, 640, 664, 812, 830, 896, 928, 1015, 1120, 1160, 1162, 1280, 1328, 1624, 1660, 1792, 1856, 2030, 2240, 2320, 2324, 2407, 2656, 2905, 3248, 3320, 3712, 4060, 4480, 4640, 4648, 4814, 5312, 5810, 6496, 6640, 7424, 8120, 8960, 9280, 9296, 9628, 10624, 11620, 12035, 12992, 13280, 16240, 16849, 18560, 18592, 19256, 21248, 23240, 24070, 25984, 26560, 32480, 33698, 37120, 37184, 38512, 46480, 48140, 51968, 53120, 64960, 67396, 74368, 77024, 84245, 92960, 96280, 106240, 129920, 134792, 148736, 154048, 168490, 185920, 192560, 259840, 269584, 308096, 336980, 371840, 385120, 539168, 616192, 673960, 743680, 770240, 1078336, 1347920, 1540480, 2156672, 2695840, 3080960, 4313344, 5391680, 10783360, 21566720]

約数ペア:

[(1, 21566720), (2, 10783360), (4, 5391680), (5, 4313344), (7, 3080960), (8, 2695840), (10, 2156672), (14, 1540480), (16, 1347920), (20, 1078336), (28, 770240), (29, 743680), (32, 673960), (35, 616192), (40, 539168), (56, 385120), (58, 371840), (64, 336980), (70, 308096), (80, 269584), (83, 259840), (112, 192560), (116, 185920), (128, 168490), (140, 154048), (145, 148736), (160, 134792), (166, 129920), (203, 106240), (224, 96280), (232, 92960), (256, 84245), (280, 77024), (290, 74368), (320, 67396), (332, 64960), (406, 53120), (415, 51968), (448, 48140), (464, 46480), (560, 38512), (580, 37184), (581, 37120), (640, 33698), (664, 32480), (812, 26560), (830, 25984), (896, 24070), (928, 23240), (1015, 21248), (1120, 19256), (1160, 18592), (1162, 18560), (1280, 16849), (1328, 16240), (1624, 13280), (1660, 12992), (1792, 12035), (1856, 11620), (2030, 10624), (2240, 9628), (2320, 9296), (2324, 9280), (2407, 8960), (2656, 8120), (2905, 7424), (3248, 6640), (3320, 6496), (3712, 5810), (4060, 5312), (4480, 4814), (4640, 4648)]